Advantages of electric welding machines: electric welding machines use electric energy to instantly convert electric energy into heat energy. Electricity is very common. Electric welding machines are suitable for working in dry environments and do not require too many requirements. Because of their small size, simple operation, convenient use and fast speed The advantages of strong welding seam after welding are widely used in various fields, especially for parts that require high strength, which can instantly connect the same metal material (or dissimilar metals, but the welding method is different) permanently. , After heat treatment, the welding seam has the same strength as the base metal, and the sealing is very good, which solves the problems of sealing and strength for the manufacture of storage gas and liquid containers. As shown in Figure 1.
2. Disadvantages of electric welding machine: During the use of electric welding machine, a certain magnetic field will be generated around the welding machine. When the arc burns, it will generate radiation to the surrounding. There are infrared rays, ultraviolet rays and other light species in the arc, as well as harmful metal vapor and smoke. Substances, so adequate protective measures must be taken during operation. Welding is not suitable for the welding of high carbon steel. Due to the crystallization, segregation and oxidation of the weld metal, the welding performance of high carbon steel is poor, and it is easy to crack after welding, resulting in hot and cold cracks. Low carbon steel has good welding performance, but it needs to be handled properly in the process, and the cleaning of rust is cumbersome. Sometimes there will be defects such as slag inclusion, cracks, stomata and undercuts in the weld, but proper operation will reduce the occurrence of defects.